Portable enameling-oven.



H. A. POLHEMUSJ PORTABLE ENAMBLING OVEN. I

APPLICATION FILED MAY 21, 1913.

Patented Sept, 1, 1914.

Attorneys UNITED STATES.

"ET Fries.

HENRY ALEXANDER POLHEMUS, OF BUFFALO, NEW YORK.

PORTABLE ENA Lioness.

Specification of Letters Patent.

tannins-oven.

Patented Sept-i, 11ers.

.- Application filed May 21, 1am. seriaino. 769,101.

To all alien it may concern:

Be it known that-.1, HENRY PoLrrnMos, a citizen of the United States,residing at .liuffalo, in the county of Erie and State of \vhereliiy aproper circulation of air may be maintained and to further provide asliding strip connected to the lowerextremities of the side walls whichmay be raised or lowered as desired. The sliding strip provides for aregulation oi heat of the ovenand also provides ventilating meanstherefor.

A further object is to provide an enameling oven which is suspended froman overhead trolley where'ev the said oven may be moved out of the waywhen not in use.

l Viiih the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the combination andarrangement o f'parts and in the i details of constri-ictionherema'lte'r described,

and claimed, it being understood that changes in the precise embodimentof the invention herein disclosed, can be made within the scope oi" whatis claimed, without departing from the spirit of themvention.

In the dra'iwings accompanying this specification and forming apartthereof, the preferable form of my invention is illustrated, in whichFigure 1 is aside view in elevation of my improved ena-meling oven assuspended from an overhead trolley. Fig. 2 is a cross sectionalviewthereot taken on the line-A--A o'f'Fig. 1 and with the end door of asomewhat modified form. Fig. 3 illustrates a section taken through oneof the side walls and showing the manner in which the strip may beraised and held in such position. Fig. l illustrates a modified'form ofside wall in which the sliding strip is omitted.

Referring to the drawings in which simibe maintained in a raisedposition. there are suitable bolts 9 soarrangeti that lar referencenumerals designate corre sponding parts throughout the several news, theoven COlIlPl'lSBS the side walls 1 and the top 2 extending thereacross.As

illustrated in Fig. l of the drawings. the

side walls and top may be formed of the two metal plates 3 spaced asuitable dis tance apart and inserted thcrebetween is the heatinsulating substance t.

As illustrated in Figs. 1, 2 and 3 ot' the drawings the side wall 1 isprovided with a longitudinal strip?) slid-ably secured to the lower edgethereof by the guides 6 whereby the said strip may be raised or lowered,

there being suitable latches 7 adapted to err gage eyes 8 secured to theside walls 1 and strip 5 respectively, whereby the strip may Also thestrip 5 may be. locked in its lower p0 sltion. The form of side wallillustrated'in Fig. 4C differs from the foregoing in the fact that theside wall 1 is projected dowi-iwardly or a slight distance and the strip5 is dispensed with.

llingedly secured along the top of the oven and at the ends thereof arethe swingingdoors 10 which act as'a closure for the oven ends and serveto retain the heat therein. The doors 10 are hingedly secured to the topas at 11 and in order to provide meanswhercbv the doors may beheld inraised and also an adjusted positions, a rope or flexible conncctronlZis rigidly secured to the lower portion of the door as at 13 and extendsover a superstructureM rigidly secured to the top of the oven and at theside edges thereof. The said flexible connection or rope 12 then extendsdowmvardly and engages a. suitable tying post 1-5 arranged at aconvenient point upon the side wall .1.

A somewhat modified form of door is illustrated in Fig. 2 oi thedrawings in which the door is of the folding or collapsible type andcomprises a plurality i li' vertical sections 16 hingedly securedtogether and hingedly secured to the side walls 1.

The said modified form of door is adapted to fold toward the center andis used when a number of cars are positioned adjacent and little or noroom is available therebetween and an upwardly swinging door would beuseless. A

The side walls of the oven are provided witha number of openings 17extending therethrough and adjacent which openings lot are the flapvalves .18 pivotally secured in position ,jvvinnh; flops ere adapted toregulste the tires of the exposed portion ofthe openings. ed

, vided at the top of the oven and act in con 'junction with the inletopenings 1? to n1smts out the oven,

A conventional type of thermometer or other temperature recording device20 1s in a constant circulation of air through- ;illustrated upon theside wall of the oven and is adapted to register the temperaturemaintained therein. The strip 5 may be raised While the oven is movedabout and also may be raised for the purpose of venti- --eting andcooling the oven should the temobrature thereof, rise to too high apoint.

In order to mount the oven in a portable manner, the overhead trolley isprovided and comprises the horizontal beams 21v sup-- ported uponsuitable posts and upon which beams are mounted the wheels 23. Asuitable suspending structure 2% is carried by the Wheels and rigidlysecured to the top of the oven. The posts 22 which support the overheadtrolleys are positioned the sides of the track rails 25 beneath whichrails are disposed the heating coils 26, the

letter supplying the heat for the leaking of v the enamel. I

,With the above construction as I have described the same; the overheadtrack and hangers allow the oven to be moved about and brought overe'passenger car which is positioned upon the'rails 25 above the coils2,6 and "the end doors 10 or "16 ii-re then closed and the ventilators17 more adjust-c so that the temperature registered by the thermometer20,

reach-es the desired said openings.

to it place Where the oven will take up little or no shop room. 7

Having thus iully descrlbed the invention what I chum to be new andorlginal with me 1s:- I

1-. An enamellng oven comprising a top and side walls, longitudinallyextending strips movably secured to the lower extremiti-esco'f said sidewalls, means for locking said strips in a raised position, means forlocking said strips in a lowered position, the side walls provided withvalve controlled openings extending therethrough, said top provided withventilating openings extend ing theretln'ough, and swinging doors positinned at the ends of the said oven.

An cnameling oven comprising an hpcn-euded chamber, hingedly mounted enddoors secured thereto, means for holding the some in" an openposition,longitudinal strips secured to the lowerextremities of the sidewalls of the chamber, means for locking said strips in e reisedandlowered position, said chamber provided with openings extending throughthe top and side walls thereof, and valves controlling the In testimon;that 1 claim as my own, I have hereto ajiined my signature in thepresence of two witnesses.

v HENR Y ALEXANDER POLHEMUS. Witnesses:

M. L. MIGHELLS.

M. Jf BARRY.

mas

the foregoing

